Compound water-gage for steam-boilers



(No Model!) E D. PYKE.

. GOMPOUND WATER GAGE FOR STEAM BOILERS, No. 347,303; Patented Aug. 10,1886.

WITNESSES INVENTOR ATTORNEYS.

N. PETERS, PhutlH-Mmgnphlr. wminmn. 0.1;

NITED STATES PATENT OFFICE.

DAVID PYKE, OF PHILADELPHIA, PENNSYLVANIA.

COMPOUND WATER-GAGE FOR STEAM-BOILERS.

SPECIFICATION forming part of Letters Patent No. 347,303, dated August10, 1886.

Application filed Novcmber'iZT, 1885. Serial No. 184,098. (No model.)

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a front elevation, partly in section, of my compoundwater-gage. Fig. 2 is a side elevation of thesame. Fig. 3 is a frontelevation of a steam-boiler, showing the apertures for the attachment ofthe gage.

The object of this invention is to provide compound water'gages forsteam-boilers, constructed in such a manner that they will indicate thetrue state ofthe water in the boilers at all times, even should one ormore of the connections with the boilers become clogged.

The invention consists in the construction and combination of thevarious parts of the compound water-gage, as will be hereinafter fullydescribed. I r

A B (3 represent three parallel glass tubes. The ends of the said tubesA O are connected with elbow-couplings D, the inner arms of which areconnected with short pipes secured in perforations in the head of thesteam-boiler. The inner arms of the couplings D of one of the sidetubes, A G, are made with a downward offset, and the inner arms of thecouplings D of the other side tube are made with an upward ofiset, asshown in Fig. 2, so that the boiler-connections of the couplings of thetwo tubes A C will be at different levels, and thus not liable to becomeclogged at the same time by impurities in the water. The couplings D areprovided with valves E and cocks F, for use in trying the gage and inblowing out the said gage. The ends of the center tube, B, are connectedwith the center arms of the three-way globe-valves G, side arms of whichare connected with the couplings D of the side tubes, A G. Theglobe-valves G are so arranged that when the said valves are'both closedthe lower end of one of the side tubes, A 0, will be connected by anopen passage with the upper end of the other tube, as shown in Fig. 1;and when both the valves G are opened the ends of the side tubes will beconnected with each other, and with the ends-0f the center tube by openpassages. \Vith this consruction, when the gage-is in order the waterwill stand at the samelevel in the three tubes A B 0. Should the waterat any time stand at different levels in the three tubes, the engineerknows that something is wrong, and can soon find out, by operating thevalves F G, where the trouble is, and canremedyit by blowing out theclogged connection, or otherwise clearing it. The side arms of thethreeway globe valves G are connected by bars H, which are perforated toreceive the said arms, and are secured in place upon them by theelbow-couplings D of the side tubes, A O. The bars H are made of agreater breadth than the diameter of the tubes A B O, as shown in Fig.2. The bars H serve as connections to give firmness and strength to thecompound gage, and as guards to prevent the glass tubes A B 0 from beingaccidentally broken.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A compound water-gage for steam-boilers,constructed substantially as herein shown and described, and consistingof the three parallel glass tubes A B G, the elbow couplings D, attachedto the ends of the said tubes A (1, having offsets in their inner arms,and provided with valves E and cocks F, and the th reeway globe-valvesG, connected with the ends of the center tube, B, and with theelbow-couplings of the side tubes, as set forth.

2. In a compound water-gage for steamboilers, the combination, with thethree glass tubes A B G, the elbow-couplings D, attached to the sidetubes, A O, and the three-way globe valves G, connected with the centertube, B, and the elbow-couplings of the side tubes, of theconnecting-bars H, substantially as herein shown and described, wherebygreater firmness and strength are given to the gage,

and the glass tubes are prevented from being accidentally broken, as setforth.

DAVID PYKE.

Witnesses:

A. G; KOLLOFRALTH, ROBERT Foes.

